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Interfacing CN0511 with Arduino or FPGA



		

			

									
					    EngelM
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Nov 18, 2022 
				
			
			
		
    

				
		
    
		    		    
		    
		    		      		            		        
    Category: Hardware
    
    		        		            		    
    Product Number:  CN0511 
    
    		        		    		    	
			
    Hi,
    

    currently we are evaluating the CN0511 reference design. The Raspberry communicates with the Board through SPI (ADF4372, AD9166) respectivly I²C (AD5693R). Therefore it should be possible to easily interface the CN0511 with an Arduino or FPGA through the 40-pin connector P2 or  will there occur any problems which i am overlooking right now?
    

    Thanks in advance and regards
    

    Marius
    
									
			        
		
    

				
						
        

    
    Tags: 
                                            
                 hardware
                
                                                    
                 CN0511
                
                                
            
    
    
    

		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    
















    
	
    
	
    
					



			








	
	
	
	



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      •  Analog Employees  
      
            
						
                            
            
            				
            
                on Nov 18, 2022 3:08 AM
            
            
					
      
	
      

		
		
      
					
      Hi Marius,
      

      Yes, it should be possible to interface with the CN0511 using Arduino and FPGA. The development of the bare metal driver for the Arduino and the HDL for the FPGA are the key parts for implementation. You should check the logic voltage levels of the processor you will use and also ensure that the CN0511 is supplied with the appropriate power (5V, 3A).

      Additionally, here are the interfaces you should take have:
      - 2x I2C
      - SPI
      - 11 Digital I/O

      

      Best Regards,
      

      Nikko
      
			
      

		
			
	      

		
		
	
      
	
      
		
      
			
		
      
	
      
	
      
		
						
						
				
						
				
				
		
		
      
			
		
      
	
      

      

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                on Nov 21, 2022 3:21 AM
            
            
												
						in reply to rogueC
					
									
        
	
        

		
		
        
					
        Hi Nikko,
        

        

        thanks for the feedback. If i get everything right there also has to be a 3.3 Volt supply to Pin 1 and 17 of the P2 Connector to supply the EEPROM?
        

        Furthermore are there any default settings for the AD5693R DAC when the board is powered up?
        

        

        Best regards,
        

        Marius
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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        •  Analog Employees  
        
            
						
                            
            
            				
            
                on Nov 22, 2022 2:13 AM
            
            
												
						in reply to EngelM
					
									
        
	
        

		
		
        
					
        Hi Marius,
        

        You are correct. The 3.3V supply to the EEPROM comes from the Raspberry Pi regulator. Typical 3.3V supplies from the Arduino and other controller boards will be sufficient.

        For the AD5693R DAC, you should set this at mid-scale voltage output which is at 1.65V for the crystal oscillator.

        

        Best Regards,
        

        Nikko
        
			
        

		
			
	      

		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
						
				
						
				
				
		
		
        
			
		
        
	
        

        

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                on Nov 23, 2022 2:38 AM
            
            
												
						in reply to rogueC
					
									
          
	
          

		
		
          
					
          Hi Nikko,
          

          thanks for your answers and the help.
          

          After further evaluating the board i found some inconsistency with the datasheet of the AD9166. I set up the DAC to output a single 500 MHz signal and read back the corresponding registers (0x114 to 0x119 for the FTW or X, 0x124 to 0x129 for Modulus or B and 0x12A to 0x12F for Delta or A). Following the calculation on page 53 in the datesheet i get the following values for the registers: X = 23456248059221, A = 1 and B = 3. But if i read the registers, the values for A and B seem to switched. The registers for the modulus correspond to the delta value and vice versa. Could it be that there is a fault with the registermap in the AD9166 datasheet? The DAC configuration and register readback was all carried out with the IIO Oscilloscope software.
          

          Best regards,
          

          Marius
          
			
          

		
			
	      

		
		
	
          
	
          
		
          
			
		
          
	
          
	
          
		
						
						
				
						
				
				
		
		
          
			
		
          
	
          

          

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